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14.6.2018 We have submitted the manuscript "Chemical gating of hexagonal boron nitride on Ir(111) by Cs adsorption and intercalation" to Phys. Rev. B.  Here, we show how the geometric and electronic properties of the ultrathin insulator hBN can me tuned by interacion with the electron donor Cs. Authors are J. Cai, W. Jolie, C. Silva, M. Petrovic, C. Schlueter, T. Michely, M. Kralj, T.-L. Lee, and C. Busse.

 13.6.2018 We have submitted the manuscript "Valleys and hills of graphene on Ru(0001)" to J. Phys. Chem. C. In this work, we precisely determine the shape of a single layer of graphene using X-ray Standing Waves and find a good match to results from Density Functional Theory. Authors are C. Silva, M. Iannuzzi, D. Duncan,P. Ryan, K. Clarke, J. Küchle, J. Cai, W. Jolie, C. Schlueter, T.-L. Lee, and C: Busse

04.06.2018  New Members: Joshua Fuhrmann and Dina Wilks join the group.

01.05.2018  New Member: Dr. Robin Ohmann joins the group.
16.04.2018  New Member: Dennis Rybakowski joins the group.

08.03.2018  Our paper "Visualizing layer polarization in bilayer graphene with quasiparticle interference" was published in Phys. Rev. Lett. In this work, we demonstrate that electrons in bilayer graphene can be localized in one of the two layers only.

 19.01.2018 Our paper "Molecular beam epitaxy of quasi-freestanding transition metal disulphide monolayers on van der Waals substrates: a growth sstudy" was ublished in 2D Materials. In this work, we describe a new approach to grow transition metal dichalcogenides on top of graphene and hexagonal boron nitride.

 01.11.2017   The formation of our new group was featured in Siegener Zeitung (SZ) and  Westfalenpost (WP) (see also  the university's news).


AG Experimentelle Nanophysik

In the group Experimental Nanophysics ultrathin 2D-Materials are prepared and characterized with the methods of surface science. Starting with the prototypical graphene (Nobel Prize in Physics 2010), which consists of a single atomic layer of carbon, many new members of this material class have been discovered in the recent years. Theoretically more than a 100 different materials are possible, however until now only a few have been synthesized.  

Our main method for investigation is scanning tunneling microscopy (STM) which allows atomic resolution. We prepare advanced 2D-Materials such as composites of graphene and hexagonal boron nitride or ultrathin semiconductors such as MoS2 under well controlled conditions, and modify those layers specifically, to for example dope them or investigate the interaction with potentially harmful gases from the environment. In the recent years we could show, that electrons can be confined in quantum dots made of graphene, how graphene can be destroyed through bombardement with ions, and how impurity atoms are able to sneak in between (intercalate) the 2D-Materials and the supporting substrate.

More impressions can be found on our old website of the University Münster: